Nairobi — The Kenya Rural Roads Authority has attributed the deterioration of the Ngong-Suswa Road to persistent overloading by heavy commercial vehicles, saying the road is undergoing phased maintenance to restore its condition and improve safety for motorists.

In a public notice issued, the roads agency said it had taken note of concerns raised by members of the public over the state of the road, clarifying that repair works are ongoing to address pavement damage caused largely by vehicles exceeding the prescribed axle load limits.

KeRRA said the Ngong-Suswa Road has been in use for the last eight years, with the final section of the project only completed in December 2025.

According to the authority, the road was designed to accommodate a maximum axle load of 10 tonnes but has frequently been subjected to trucks carrying loads of up to 50 tonnes, accelerating its deterioration.

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"The Ngong-Suswa Road was constructed with axle load limits of up to 10 tonnes per axle; however, the road has been subjected to traffic carrying up to 50 tonnes, which has accelerated its deterioration," the authority said.

KeRRA noted that the damage is particularly evident on the section heading towards Suswa, where the effects of overloading have been more pronounced.

To curb the problem, the authority said it has installed the Ngong-Suswa-Ewaso-Kedong Virtual Weighbridge, which detects overloaded vehicles and facilitates enforcement of axle load regulations under the Traffic Act.

The agency said motorists found flouting the regulations have been arrested and charged, adding that enforcement will continue alongside ongoing maintenance works.

KeRRA appealed to transporters and other road users to comply with the stipulated load limits, saying adherence to axle load regulations is critical to protecting the country's road infrastructure and reducing maintenance costs.

The authority also reiterated its commitment to continuously improving the road to meet growing traffic demands while enhancing safety for all users.